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3 years ago

Solution a is 2 mmol/l urea, and solution b is 1mmol/l nacl. assume that g nacl = 1.85. are the 2 solutions isosmotic?

1 answer:

8 0

Soution A has a higher osmolarity than solution B and is hyperosmotic.
Solution be is hyposmotic. Neither are isosmotic.

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Balanced nuclear equation forces the alpha decay Po-210

Serjik [45]

Answer:

$_{84}^{210}\text{Po} \longrightarrow \, _{82}^{206}\text{Pb} \, + \, _{2}^{4}\text{He}$

Explanation:

Your unbalanced nuclear equation is:

$_{84}^{210}\text{Po} \longrightarrow \, _{x}^{y}\text{Z} + \, _{2}^{4}\text{He}$

The main point to remember in balancing nuclear equations is that the sums of the superscripts and the subscripts must be the same on each side of the equation.

Then

84 = x + 2, so x = 84 - 2 = 82

210 = y + 4, so y = 210 - 4 = 206

Element 82 is lead, so the nuclear equation becomes

$_{84}^{210}\text{Po} \longrightarrow \, _{82}^{206}\text{Pb} \, + \, _{2}^{4}\text{He}$

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3 years ago

Give 10 examples of potential energy converted into kinetic energy

Viktor [21]

Answer:

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Burning of Oil, Gas and Coal

Wind Turbine

Explanation:

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2 years ago

Which of the following are good conductors

dimulka [17.4K]

Answer:

iron, graphite,NaCl solution etc are some examples of good conductor of electricity

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Explain why oil is called a fossil fuel.

Dmitrij [34]

Oil is referred to as a fossil fuel because it is derived from fossils.

Fossil fuels are the result of dinosaur remains being put under pressure for millions of years.

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